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/* Copyright (c) 1994 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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|
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/* |
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* Convert MGF (Materials and Geometry Format) to Radiance |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <math.h> |
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#include <string.h> |
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|
13 |
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#include "platform.h" |
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#include "mgflib/parser.h" |
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#include "color.h" |
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#include "tmesh.h" |
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|
18 |
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#define putv(v) printf("%18.12g %18.12g %18.12g\n",(v)[0],(v)[1],(v)[2]) |
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|
20 |
+ |
#define invert (xf_context != NULL && xf_context->rev) |
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|
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double glowdist = FHUGE; /* glow test distance */ |
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|
24 |
< |
double emult = 1.; /* emmitter multiplier */ |
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> |
double emult = 1.; /* emitter multiplier */ |
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|
26 |
< |
int r_comment(), r_cone(), r_cyl(), r_face(), r_ies(), r_ring(), r_sph(); |
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char *material(), *object(), *addarg(); |
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FILE *matfp; /* material output file */ |
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|
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|
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main(argc, argv) /* convert files to stdout */ |
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int argc; |
31 |
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char *argv[]; |
29 |
> |
int r_comment(int ac, char **av); |
30 |
> |
int r_cone(int ac, char **av); |
31 |
> |
int r_cyl(int ac, char **av); |
32 |
> |
int r_sph(int ac, char **av); |
33 |
> |
int r_ring(int ac, char **av); |
34 |
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int r_face(int ac, char **av); |
35 |
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int r_ies(int ac, char **av); |
36 |
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char * material(void); |
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> |
char * object(void); |
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char * addarg(char *op, char *arg); |
39 |
> |
void do_tri(char *mat, C_VERTEX *cv1, C_VERTEX *cv2, C_VERTEX *cv3, int iv); |
40 |
> |
void cvtcolor(COLOR radrgb, register C_COLOR *ciec, double intensity); |
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|
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|
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int |
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main( |
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int argc, |
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char *argv[] |
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) |
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{ |
49 |
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int i, rv; |
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int i; |
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|
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matfp = stdout; |
52 |
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/* print out parser version */ |
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printf("## Translated from MGF Version %d.%d\n", MG_VMAJOR, MG_VMINOR); |
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/* initialize dispatch table */ |
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mg_ehand[MG_E_COMMENT] = r_comment; |
56 |
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mg_ehand[MG_E_COLOR] = c_hcolor; |
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mg_ehand[MG_E_CONE] = r_cone; |
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mg_ehand[MG_E_CMIX] = c_hcolor; |
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mg_ehand[MG_E_CSPEC] = c_hcolor; |
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mg_ehand[MG_E_CXY] = c_hcolor; |
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mg_ehand[MG_E_CYL] = r_cyl; |
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mg_ehand[MG_E_ED] = c_hmaterial; |
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mg_ehand[MG_E_FACE] = r_face; |
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mg_ehand[MG_E_IES] = r_ies; |
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mg_ehand[MG_E_MATERIAL] = c_hmaterial; |
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mg_ehand[MG_E_NORMAL] = c_hvertex; |
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mg_ehand[MG_E_OBJECT] = obj_handler; |
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mg_ehand[MG_E_POINT] = c_hvertex; |
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mg_ehand[MG_E_RD] = c_hmaterial; |
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mg_ehand[MG_E_RING] = r_ring; |
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mg_ehand[MG_E_RS] = c_hmaterial; |
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mg_ehand[MG_E_SPH] = r_sph; |
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mg_ehand[MG_E_TD] = c_hmaterial; |
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mg_ehand[MG_E_TS] = c_hmaterial; |
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mg_ehand[MG_E_VERTEX] = c_hvertex; |
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mg_ehand[MG_E_XF] = xf_handler; |
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mg_ehand[MG_E_COMMENT] = r_comment; /* we pass comments */ |
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mg_ehand[MG_E_COLOR] = c_hcolor; /* they get color */ |
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mg_ehand[MG_E_CONE] = r_cone; /* we do cones */ |
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mg_ehand[MG_E_CMIX] = c_hcolor; /* they mix colors */ |
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mg_ehand[MG_E_CSPEC] = c_hcolor; /* they get spectra */ |
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mg_ehand[MG_E_CXY] = c_hcolor; /* they get chromaticities */ |
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mg_ehand[MG_E_CCT] = c_hcolor; /* they get color temp's */ |
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mg_ehand[MG_E_CYL] = r_cyl; /* we do cylinders */ |
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mg_ehand[MG_E_ED] = c_hmaterial; /* they get emission */ |
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mg_ehand[MG_E_FACE] = r_face; /* we do faces */ |
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mg_ehand[MG_E_IES] = r_ies; /* we do IES files */ |
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mg_ehand[MG_E_IR] = c_hmaterial; /* they get refractive index */ |
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mg_ehand[MG_E_MATERIAL] = c_hmaterial; /* they get materials */ |
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mg_ehand[MG_E_NORMAL] = c_hvertex; /* they get normals */ |
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mg_ehand[MG_E_OBJECT] = obj_handler; /* they track object names */ |
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mg_ehand[MG_E_POINT] = c_hvertex; /* they get points */ |
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mg_ehand[MG_E_RD] = c_hmaterial; /* they get diffuse refl. */ |
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mg_ehand[MG_E_RING] = r_ring; /* we do rings */ |
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mg_ehand[MG_E_RS] = c_hmaterial; /* they get specular refl. */ |
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mg_ehand[MG_E_SIDES] = c_hmaterial; /* they get # sides */ |
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mg_ehand[MG_E_SPH] = r_sph; /* we do spheres */ |
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mg_ehand[MG_E_TD] = c_hmaterial; /* they get diffuse trans. */ |
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mg_ehand[MG_E_TS] = c_hmaterial; /* they get specular trans. */ |
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mg_ehand[MG_E_VERTEX] = c_hvertex; /* they get vertices */ |
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mg_ehand[MG_E_XF] = xf_handler; /* they track transforms */ |
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mg_init(); /* initialize the parser */ |
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/* get options & print header */ |
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/* get our options & print header */ |
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printf("## %s", argv[0]); |
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for (i = 1; i < argc && argv[i][0] == '-'; i++) { |
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printf(" %s", argv[i]); |
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switch (argv[i][1]) { |
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case 'g': /* glow distance (meters) */ |
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if (argv[i][2] || badarg(argc-i, argv+i, "f")) |
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if (argv[i][2] || badarg(argc-i-1, argv+i+1, "f")) |
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goto userr; |
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glowdist = atof(argv[++i]); |
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printf(" %s", argv[i]); |
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break; |
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case 'e': /* emitter multiplier */ |
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if (argv[i][2] || badarg(argc-i, argv+i, "f")) |
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if (argv[i][2] || badarg(argc-i-1, argv+i+1, "f")) |
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goto userr; |
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emult = atof(argv[++i]); |
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printf(" %s", argv[i]); |
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break; |
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case 'm': /* materials file */ |
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matfp = fopen(argv[++i], "a"); |
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if (matfp == NULL) { |
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fprintf(stderr, "%s: cannot append\n", argv[i]); |
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exit(1); |
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} |
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printf(" %s", argv[i]); |
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break; |
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default: |
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goto userr; |
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} |
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} |
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putchar('\n'); |
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if (i == argc) { /* convert stdin */ |
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if ((rv = mg_load(NULL)) != MG_OK) |
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if (mg_load(NULL) != MG_OK) |
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exit(1); |
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if (mg_nunknown) |
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printf("## %s: %u unknown entities\n", |
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argv[0], mg_nunknown); |
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} else /* convert each file */ |
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for ( ; i < argc; i++) { |
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printf("## %s %s ##############################\n", |
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argv[0], argv[i]); |
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if ((rv = mg_load(argv[i])) != MG_OK) |
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if (mg_load(argv[i]) != MG_OK) |
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exit(1); |
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if (mg_nunknown) { |
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printf("## %s %s: %u unknown entities\n", |
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argv[0], argv[i], mg_nunknown); |
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mg_nunknown = 0; |
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} |
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} |
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exit(0); |
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userr: |
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fprintf(stderr, "Usage: %s [-g dist][-m mult] [file.mgf] ..\n", |
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fprintf(stderr, "Usage: %s [-g dist][-e mult][-m matf] [file.mgf] ..\n", |
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argv[0]); |
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exit(1); |
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} |
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int |
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r_comment(ac, av) /* repeat a comment verbatim */ |
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register int ac; |
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register char **av; |
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r_comment( /* repeat a comment verbatim */ |
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register int ac, |
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register char **av |
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) |
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{ |
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fputs("\n#", stdout); /* use Radiance comment character */ |
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while (--ac) { |
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putchar('#'); /* use Radiance comment character */ |
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while (--ac) { /* pass through verbatim */ |
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putchar(' '); |
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fputs(*++av, stdout); |
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} |
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|
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int |
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r_cone(ac, av) /* put out a cone */ |
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int ac; |
156 |
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char **av; |
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> |
r_cone( /* put out a cone */ |
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> |
int ac, |
156 |
> |
char **av |
157 |
> |
) |
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{ |
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static int ncones; |
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char *mat; |
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C_VERTEX *cv1, *cv2; |
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FVECT p1, p2; |
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int inv; |
165 |
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|
165 |
> |
/* check argument count and type */ |
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if (ac != 5) |
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return(MG_EARGC); |
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if (!isflt(av[2]) || !isflt(av[4])) |
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return(MG_ETYPE); |
170 |
+ |
/* get the endpoint vertices */ |
171 |
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if ((cv1 = c_getvert(av[1])) == NULL || |
172 |
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(cv2 = c_getvert(av[3])) == NULL) |
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return(MG_EUNDEF); |
174 |
< |
xf_xfmpoint(p1, cv1->p); |
174 |
> |
xf_xfmpoint(p1, cv1->p); /* transform endpoints */ |
175 |
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xf_xfmpoint(p2, cv2->p); |
176 |
< |
r1 = xf_scale(atof(av[2])); |
176 |
> |
r1 = xf_scale(atof(av[2])); /* scale radii */ |
177 |
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r2 = xf_scale(atof(av[4])); |
178 |
< |
inv = r1 < 0.; |
179 |
< |
if (r1 == 0.) { |
178 |
> |
inv = r1 < 0.; /* check for inverted cone */ |
179 |
> |
if (r1 == 0.) { /* check for illegal radii */ |
180 |
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if (r2 == 0.) |
181 |
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return(MG_EILL); |
182 |
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inv = r2 < 0.; |
183 |
< |
} else if (r2 != 0. && inv ^ r2 < 0.) |
183 |
> |
} else if (r2 != 0. && inv ^ (r2 < 0.)) |
184 |
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return(MG_EILL); |
185 |
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if (inv) { |
186 |
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r1 = -r1; |
187 |
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r2 = -r2; |
188 |
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} |
189 |
< |
if ((mat = material()) == NULL) |
189 |
> |
if ((mat = material()) == NULL) /* get material */ |
190 |
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return(MG_EBADMAT); |
191 |
+ |
/* spit the sucker out */ |
192 |
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printf("\n%s %s %sc%d\n", mat, inv ? "cup" : "cone", |
193 |
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object(), ++ncones); |
194 |
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printf("0\n0\n8\n"); |
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|
201 |
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|
202 |
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int |
203 |
< |
r_cyl(ac, av) /* put out a cylinder */ |
204 |
< |
int ac; |
205 |
< |
char **av; |
203 |
> |
r_cyl( /* put out a cylinder */ |
204 |
> |
int ac, |
205 |
> |
char **av |
206 |
> |
) |
207 |
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{ |
208 |
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static int ncyls; |
209 |
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char *mat; |
211 |
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C_VERTEX *cv1, *cv2; |
212 |
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FVECT p1, p2; |
213 |
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int inv; |
214 |
< |
|
214 |
> |
/* check argument count and type */ |
215 |
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if (ac != 4) |
216 |
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return(MG_EARGC); |
217 |
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if (!isflt(av[2])) |
218 |
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return(MG_ETYPE); |
219 |
+ |
/* get the endpoint vertices */ |
220 |
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if ((cv1 = c_getvert(av[1])) == NULL || |
221 |
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(cv2 = c_getvert(av[3])) == NULL) |
222 |
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return(MG_EUNDEF); |
223 |
< |
xf_xfmpoint(p1, cv1->p); |
223 |
> |
xf_xfmpoint(p1, cv1->p); /* transform endpoints */ |
224 |
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xf_xfmpoint(p2, cv2->p); |
225 |
< |
rad = xf_scale(atof(av[2])); |
226 |
< |
if ((inv = rad < 0.)) |
225 |
> |
rad = xf_scale(atof(av[2])); /* scale radius */ |
226 |
> |
if ((inv = rad < 0.)) /* check for inverted cylinder */ |
227 |
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rad = -rad; |
228 |
< |
if ((mat = material()) == NULL) |
228 |
> |
if ((mat = material()) == NULL) /* get material */ |
229 |
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return(MG_EBADMAT); |
230 |
+ |
/* spit out the primitive */ |
231 |
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printf("\n%s %s %scy%d\n", mat, inv ? "tube" : "cylinder", |
232 |
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object(), ++ncyls); |
233 |
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printf("0\n0\n7\n"); |
239 |
|
|
240 |
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|
241 |
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int |
242 |
< |
r_sph(ac, av) /* put out a sphere */ |
243 |
< |
int ac; |
244 |
< |
char **av; |
242 |
> |
r_sph( /* put out a sphere */ |
243 |
> |
int ac, |
244 |
> |
char **av |
245 |
> |
) |
246 |
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{ |
247 |
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static int nsphs; |
248 |
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char *mat; |
250 |
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C_VERTEX *cv; |
251 |
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FVECT cent; |
252 |
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int inv; |
253 |
< |
|
253 |
> |
/* check argument count and type */ |
254 |
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if (ac != 3) |
255 |
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return(MG_EARGC); |
256 |
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if (!isflt(av[2])) |
257 |
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return(MG_ETYPE); |
258 |
< |
if ((cv = c_getvert(av[1])) == NULL) |
258 |
> |
if ((cv = c_getvert(av[1])) == NULL) /* get center vertex */ |
259 |
|
return(MG_EUNDEF); |
260 |
< |
xf_xfmpoint(cent, cv->p); |
261 |
< |
rad = xf_scale(atof(av[2])); |
262 |
< |
if ((inv = rad < 0.)) |
260 |
> |
xf_xfmpoint(cent, cv->p); /* transform center */ |
261 |
> |
rad = xf_scale(atof(av[2])); /* scale radius */ |
262 |
> |
if ((inv = rad < 0.)) /* check for inversion */ |
263 |
|
rad = -rad; |
264 |
< |
if ((mat = material()) == NULL) |
264 |
> |
if ((mat = material()) == NULL) /* get material */ |
265 |
|
return(MG_EBADMAT); |
266 |
+ |
/* spit out primitive */ |
267 |
|
printf("\n%s %s %ss%d\n", mat, inv ? "bubble" : "sphere", |
268 |
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object(), ++nsphs); |
269 |
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printf("0\n0\n4 %18.12g %18.12g %18.12g %18.12g\n", |
273 |
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|
274 |
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|
275 |
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int |
276 |
< |
r_ring(ac, av) /* put out a ring */ |
277 |
< |
int ac; |
278 |
< |
char **av; |
276 |
> |
r_ring( /* put out a ring */ |
277 |
> |
int ac, |
278 |
> |
char **av |
279 |
> |
) |
280 |
|
{ |
281 |
|
static int nrings; |
282 |
|
char *mat; |
283 |
|
double r1, r2; |
284 |
|
C_VERTEX *cv; |
285 |
|
FVECT cent, norm; |
286 |
< |
|
286 |
> |
/* check argument count and type */ |
287 |
|
if (ac != 4) |
288 |
|
return(MG_EARGC); |
289 |
|
if (!isflt(av[2]) || !isflt(av[3])) |
290 |
|
return(MG_ETYPE); |
291 |
< |
if ((cv = c_getvert(av[1])) == NULL) |
291 |
> |
if ((cv = c_getvert(av[1])) == NULL) /* get center vertex */ |
292 |
|
return(MG_EUNDEF); |
293 |
< |
if (is0vect(cv->n)) |
293 |
> |
if (is0vect(cv->n)) /* make sure we have normal */ |
294 |
|
return(MG_EILL); |
295 |
< |
xf_xfmpoint(cent, cv->p); |
296 |
< |
xf_rotvect(norm, cv->n); |
297 |
< |
r1 = xf_scale(atof(av[2])); |
295 |
> |
xf_xfmpoint(cent, cv->p); /* transform center */ |
296 |
> |
xf_rotvect(norm, cv->n); /* rotate normal */ |
297 |
> |
r1 = xf_scale(atof(av[2])); /* scale radii */ |
298 |
|
r2 = xf_scale(atof(av[3])); |
299 |
< |
if (r1 < 0. | r2 <= r1) |
299 |
> |
if ((r1 < 0.) | (r2 <= r1)) |
300 |
|
return(MG_EILL); |
301 |
< |
if ((mat = material()) == NULL) |
301 |
> |
if ((mat = material()) == NULL) /* get material */ |
302 |
|
return(MG_EBADMAT); |
303 |
+ |
/* spit out primitive */ |
304 |
|
printf("\n%s ring %sr%d\n", mat, object(), ++nrings); |
305 |
|
printf("0\n0\n8\n"); |
306 |
|
putv(cent); |
311 |
|
|
312 |
|
|
313 |
|
int |
314 |
< |
r_face(ac, av) /* convert a face */ |
315 |
< |
int ac; |
316 |
< |
char **av; |
314 |
> |
r_face( /* convert a face */ |
315 |
> |
int ac, |
316 |
> |
char **av |
317 |
> |
) |
318 |
|
{ |
319 |
|
static int nfaces; |
320 |
+ |
int myi = invert; |
321 |
|
char *mat; |
322 |
|
register int i; |
323 |
|
register C_VERTEX *cv; |
324 |
|
FVECT v; |
272 |
– |
int rv; |
325 |
|
|
326 |
+ |
/* check argument count and type */ |
327 |
|
if (ac < 4) |
328 |
|
return(MG_EARGC); |
329 |
< |
if ((mat = material()) == NULL) |
329 |
> |
if ((mat = material()) == NULL) /* get material */ |
330 |
|
return(MG_EBADMAT); |
331 |
< |
if (ac <= 5) { /* check for surface normals */ |
331 |
> |
if (ac <= 5) { /* check for smoothing */ |
332 |
> |
C_VERTEX *cva[5]; |
333 |
|
for (i = 1; i < ac; i++) { |
334 |
< |
if ((cv = c_getvert(av[i])) == NULL) |
334 |
> |
if ((cva[i-1] = c_getvert(av[i])) == NULL) |
335 |
|
return(MG_EUNDEF); |
336 |
< |
if (is0vect(cv->n)) |
336 |
> |
if (is0vect(cva[i-1]->n)) |
337 |
|
break; |
338 |
|
} |
339 |
< |
if (i == ac) { /* break into triangles */ |
340 |
< |
do_tri(mat, av[1], av[2], av[3]); |
339 |
> |
if (i < ac) |
340 |
> |
i = ISFLAT; |
341 |
> |
else |
342 |
> |
i = flat_tri(cva[0]->p, cva[1]->p, cva[2]->p, |
343 |
> |
cva[0]->n, cva[1]->n, cva[2]->n); |
344 |
> |
if (i == DEGEN) |
345 |
> |
return(MG_OK); /* degenerate (error?) */ |
346 |
> |
if (i == RVBENT) { |
347 |
> |
myi = !myi; |
348 |
> |
i = ISBENT; |
349 |
> |
} else if (i == RVFLAT) { |
350 |
> |
myi = !myi; |
351 |
> |
i = ISFLAT; |
352 |
> |
} |
353 |
> |
if (i == ISBENT) { /* smoothed triangles */ |
354 |
> |
do_tri(mat, cva[0], cva[1], cva[2], myi); |
355 |
|
if (ac == 5) |
356 |
< |
do_tri(mat, av[3], av[4], av[1]); |
356 |
> |
do_tri(mat, cva[2], cva[3], cva[0], myi); |
357 |
|
return(MG_OK); |
358 |
|
} |
359 |
|
} |
360 |
+ |
/* spit out unsmoothed primitive */ |
361 |
|
printf("\n%s polygon %sf%d\n", mat, object(), ++nfaces); |
362 |
|
printf("0\n0\n%d\n", 3*(ac-1)); |
363 |
< |
for (i = 1; i < ac; i++) { |
364 |
< |
if ((cv = c_getvert(av[i])) == NULL) |
363 |
> |
for (i = 1; i < ac; i++) { /* get, transform, print each vertex */ |
364 |
> |
if ((cv = c_getvert(av[myi ? ac-i : i])) == NULL) |
365 |
|
return(MG_EUNDEF); |
366 |
|
xf_xfmpoint(v, cv->p); |
367 |
|
putv(v); |
370 |
|
} |
371 |
|
|
372 |
|
|
373 |
< |
r_ies(ac, av) /* convert an IES luminaire file */ |
374 |
< |
int ac; |
375 |
< |
char **av; |
373 |
> |
int |
374 |
> |
r_ies( /* convert an IES luminaire file */ |
375 |
> |
int ac, |
376 |
> |
char **av |
377 |
> |
) |
378 |
|
{ |
379 |
|
int xa0 = 2; |
380 |
< |
char combuf[72]; |
380 |
> |
char combuf[128]; |
381 |
|
char fname[48]; |
382 |
|
char *oname; |
383 |
|
register char *op; |
384 |
|
register int i; |
385 |
< |
|
385 |
> |
/* check argument count */ |
386 |
|
if (ac < 2) |
387 |
|
return(MG_EARGC); |
388 |
< |
(void)strcpy(combuf, "ies2rad"); |
389 |
< |
op = combuf + 7; |
390 |
< |
if (ac-xa0 >= 2 && !strcmp(av[xa0], "-m")) { |
391 |
< |
if (!isflt(av[xa0+1])) |
321 |
< |
return(MG_ETYPE); |
322 |
< |
op = addarg(addarg(op, "-m"), av[xa0+1]); |
323 |
< |
xa0 += 2; |
324 |
< |
} |
325 |
< |
if (access(av[1], 0) == -1) |
326 |
< |
return(MG_ENOFILE); |
327 |
< |
*op++ = ' '; /* IES filename goes last */ |
328 |
< |
(void)strcpy(op, av[1]); |
329 |
< |
system(combuf); /* run ies2rad */ |
330 |
< |
/* now let's find the output file */ |
331 |
< |
if ((op = strrchr(av[1], '/')) == NULL) |
388 |
> |
/* construct output file name */ |
389 |
> |
if ((op = strrchr(av[1], '/')) != NULL) |
390 |
> |
op++; |
391 |
> |
else |
392 |
|
op = av[1]; |
393 |
|
(void)strcpy(fname, op); |
394 |
|
if ((op = strrchr(fname, '.')) == NULL) |
395 |
|
op = fname + strlen(fname); |
396 |
|
(void)strcpy(op, ".rad"); |
397 |
< |
if (access(fname, 0) == -1) |
398 |
< |
return(MG_EINCL); |
399 |
< |
/* put out xform command */ |
400 |
< |
printf("\n!xform"); |
397 |
> |
/* see if we need to run ies2rad */ |
398 |
> |
if (access(fname, 0) == -1) { |
399 |
> |
(void)strcpy(combuf, "ies2rad");/* build ies2rad command */ |
400 |
> |
op = combuf + 7; /* get -m option (first) */ |
401 |
> |
if (ac-xa0 >= 2 && !strcmp(av[xa0], "-m")) { |
402 |
> |
if (!isflt(av[xa0+1])) |
403 |
> |
return(MG_ETYPE); |
404 |
> |
op = addarg(addarg(op, "-m"), av[xa0+1]); |
405 |
> |
xa0 += 2; |
406 |
> |
} |
407 |
> |
*op++ = ' '; /* build IES filename */ |
408 |
> |
i = 0; |
409 |
> |
if (mg_file != NULL && |
410 |
> |
(oname = strrchr(mg_file->fname,'/')) != NULL) { |
411 |
> |
i = oname - mg_file->fname + 1; |
412 |
> |
(void)strcpy(op, mg_file->fname); |
413 |
> |
} |
414 |
> |
(void)strcpy(op+i, av[1]); |
415 |
> |
if (access(op, 0) == -1) /* check for file existence */ |
416 |
> |
return(MG_ENOFILE); |
417 |
> |
system(combuf); /* run ies2rad */ |
418 |
> |
if (access(fname, 0) == -1) /* check success */ |
419 |
> |
return(MG_EINCL); |
420 |
> |
} |
421 |
> |
printf("\n!xform"); /* put out xform command */ |
422 |
|
oname = object(); |
423 |
|
if (*oname) { |
424 |
|
printf(" -n "); |
436 |
|
} |
437 |
|
|
438 |
|
|
439 |
< |
do_tri(mat, vn1, vn2, vn3) /* put out smoothed triangle */ |
440 |
< |
char *mat, *vn1, *vn2, *vn3; |
439 |
> |
void |
440 |
> |
do_tri( /* put out smoothed triangle */ |
441 |
> |
char *mat, |
442 |
> |
C_VERTEX *cv1, |
443 |
> |
C_VERTEX *cv2, |
444 |
> |
C_VERTEX *cv3, |
445 |
> |
int iv |
446 |
> |
) |
447 |
|
{ |
448 |
|
static int ntris; |
449 |
|
BARYCCM bvecs; |
450 |
< |
FLOAT bcoor[3][3]; |
451 |
< |
C_VERTEX *cv1, *cv2, *cv3; |
450 |
> |
RREAL bcoor[3][3]; |
451 |
> |
C_VERTEX *cvt; |
452 |
|
FVECT v1, v2, v3; |
453 |
|
FVECT n1, n2, n3; |
454 |
|
register int i; |
455 |
< |
/* the following is repeat code, so assume it's OK */ |
456 |
< |
cv1 = c_getvert(vn1); |
457 |
< |
cv2 = c_getvert(vn2); |
458 |
< |
cv3 = c_getvert(vn3); |
455 |
> |
|
456 |
> |
if (iv) { /* swap vertex order if inverted */ |
457 |
> |
cvt = cv1; |
458 |
> |
cv1 = cv3; |
459 |
> |
cv3 = cvt; |
460 |
> |
} |
461 |
|
xf_xfmpoint(v1, cv1->p); |
462 |
|
xf_xfmpoint(v2, cv2->p); |
463 |
|
xf_xfmpoint(v3, cv3->p); |
464 |
+ |
/* compute barycentric coords. */ |
465 |
|
if (comp_baryc(&bvecs, v1, v2, v3) < 0) |
466 |
|
return; /* degenerate triangle! */ |
467 |
< |
printf("\n%s texfunc T-nor\n", mat); |
467 |
> |
printf("\n%s texfunc T-nor\n", mat); /* put out texture */ |
468 |
|
printf("4 dx dy dz %s\n0\n", TCALNAME); |
469 |
|
xf_rotvect(n1, cv1->n); |
470 |
|
xf_rotvect(n2, cv2->n); |
475 |
|
bcoor[i][2] = n3[i]; |
476 |
|
} |
477 |
|
put_baryc(&bvecs, bcoor, 3); |
478 |
+ |
/* put out triangle */ |
479 |
|
printf("\nT-nor polygon %st%d\n", object(), ++ntris); |
480 |
|
printf("0\n0\n9\n"); |
481 |
|
putv(v1); |
485 |
|
|
486 |
|
|
487 |
|
char * |
488 |
< |
material() /* get (and print) current material */ |
488 |
> |
material(void) /* get (and print) current material */ |
489 |
|
{ |
490 |
|
char *mname = "mat"; |
491 |
|
COLOR radrgb, c2; |
492 |
|
double d; |
402 |
– |
register int i; |
493 |
|
|
494 |
< |
if (c_cmaterial->name != NULL) |
495 |
< |
mname = c_cmaterial->name; |
494 |
> |
if (c_cmname != NULL) |
495 |
> |
mname = c_cmname; |
496 |
|
if (!c_cmaterial->clock) |
497 |
|
return(mname); /* already current */ |
498 |
|
/* else update output */ |
499 |
|
c_cmaterial->clock = 0; |
500 |
|
if (c_cmaterial->ed > .1) { /* emitter */ |
501 |
|
cvtcolor(radrgb, &c_cmaterial->ed_c, |
502 |
< |
emult*c_cmaterial->ed/WHTEFFICACY); |
502 |
> |
emult*c_cmaterial->ed/(PI*WHTEFFICACY)); |
503 |
|
if (glowdist < FHUGE) { /* do a glow */ |
504 |
< |
printf("\nvoid glow %s\n0\n0\n", mname); |
505 |
< |
printf("4 %f %f %f %f\n", colval(radrgb,RED), |
504 |
> |
fprintf(matfp, "\nvoid glow %s\n0\n0\n", mname); |
505 |
> |
fprintf(matfp, "4 %f %f %f %f\n", colval(radrgb,RED), |
506 |
|
colval(radrgb,GRN), |
507 |
|
colval(radrgb,BLU), glowdist); |
508 |
|
} else { |
509 |
< |
printf("\nvoid light %s\n0\n0\n", mname); |
510 |
< |
printf("3 %f %f %f\n", colval(radrgb,RED), |
509 |
> |
fprintf(matfp, "\nvoid light %s\n0\n0\n", mname); |
510 |
> |
fprintf(matfp, "3 %f %f %f\n", colval(radrgb,RED), |
511 |
|
colval(radrgb,GRN), |
512 |
|
colval(radrgb,BLU)); |
513 |
|
} |
515 |
|
} |
516 |
|
d = c_cmaterial->rd + c_cmaterial->td + |
517 |
|
c_cmaterial->rs + c_cmaterial->ts; |
518 |
< |
if (d <= 0. | d >= 1.) |
518 |
> |
if ((d < 0.) | (d > 1.)) |
519 |
|
return(NULL); |
520 |
+ |
/* check for glass/dielectric */ |
521 |
+ |
if (c_cmaterial->nr > 1.1 && |
522 |
+ |
c_cmaterial->ts > .25 && c_cmaterial->rs <= .125 && |
523 |
+ |
c_cmaterial->td <= .01 && c_cmaterial->rd <= .01 && |
524 |
+ |
c_cmaterial->rs_a <= .01 && c_cmaterial->ts_a <= .01) { |
525 |
+ |
cvtcolor(radrgb, &c_cmaterial->ts_c, |
526 |
+ |
c_cmaterial->ts + c_cmaterial->rs); |
527 |
+ |
if (c_cmaterial->sided) { /* dielectric */ |
528 |
+ |
colval(radrgb,RED) = pow(colval(radrgb,RED), |
529 |
+ |
1./C_1SIDEDTHICK); |
530 |
+ |
colval(radrgb,GRN) = pow(colval(radrgb,GRN), |
531 |
+ |
1./C_1SIDEDTHICK); |
532 |
+ |
colval(radrgb,BLU) = pow(colval(radrgb,BLU), |
533 |
+ |
1./C_1SIDEDTHICK); |
534 |
+ |
fprintf(matfp, "\nvoid dielectric %s\n0\n0\n", mname); |
535 |
+ |
fprintf(matfp, "5 %g %g %g %f 0\n", colval(radrgb,RED), |
536 |
+ |
colval(radrgb,GRN), colval(radrgb,BLU), |
537 |
+ |
c_cmaterial->nr); |
538 |
+ |
return(mname); |
539 |
+ |
} |
540 |
+ |
/* glass */ |
541 |
+ |
fprintf(matfp, "\nvoid glass %s\n0\n0\n", mname); |
542 |
+ |
fprintf(matfp, "4 %f %f %f %f\n", colval(radrgb,RED), |
543 |
+ |
colval(radrgb,GRN), colval(radrgb,BLU), |
544 |
+ |
c_cmaterial->nr); |
545 |
+ |
return(mname); |
546 |
+ |
} |
547 |
|
/* check for trans */ |
548 |
|
if (c_cmaterial->td > .01 || c_cmaterial->ts > .01) { |
549 |
|
double ts, a5, a6; |
550 |
|
|
551 |
< |
ts = sqrt(c_cmaterial->ts); /* because we use 2 sides */ |
551 |
> |
if (c_cmaterial->sided) { |
552 |
> |
ts = sqrt(c_cmaterial->ts); /* approximate */ |
553 |
> |
a5 = .5; |
554 |
> |
} else { |
555 |
> |
ts = c_cmaterial->ts; |
556 |
> |
a5 = 1.; |
557 |
> |
} |
558 |
|
/* average colors */ |
559 |
|
d = c_cmaterial->rd + c_cmaterial->td + ts; |
560 |
|
cvtcolor(radrgb, &c_cmaterial->rd_c, c_cmaterial->rd/d); |
564 |
|
addcolor(radrgb, c2); |
565 |
|
if (c_cmaterial->rs + ts > .0001) |
566 |
|
a5 = (c_cmaterial->rs*c_cmaterial->rs_a + |
567 |
< |
ts*.5*c_cmaterial->ts_a) / |
567 |
> |
ts*a5*c_cmaterial->ts_a) / |
568 |
|
(c_cmaterial->rs + ts); |
569 |
|
a6 = (c_cmaterial->td + ts) / |
570 |
|
(c_cmaterial->rd + c_cmaterial->td + ts); |
571 |
< |
if (a6 < .999) { |
571 |
> |
if (a6 < .999) |
572 |
|
d = c_cmaterial->rd/(1. - c_cmaterial->rs)/(1. - a6); |
573 |
< |
scalecolor(radrgb, d); |
574 |
< |
} |
575 |
< |
printf("\nvoid trans %s\n0\n0\n", mname); |
576 |
< |
printf("7 %f %f %f\n", colval(radrgb,RED), |
573 |
> |
else |
574 |
> |
d = c_cmaterial->td + ts; |
575 |
> |
scalecolor(radrgb, d); |
576 |
> |
fprintf(matfp, "\nvoid trans %s\n0\n0\n", mname); |
577 |
> |
fprintf(matfp, "7 %f %f %f\n", colval(radrgb,RED), |
578 |
|
colval(radrgb,GRN), colval(radrgb,BLU)); |
579 |
< |
printf("\t%f %f %f %f\n", c_cmaterial->rs, a5, a6, |
579 |
> |
fprintf(matfp, "\t%f %f %f %f\n", c_cmaterial->rs, a5, a6, |
580 |
|
ts/(ts + c_cmaterial->td)); |
581 |
|
return(mname); |
582 |
|
} |
583 |
|
/* check for plastic */ |
584 |
< |
if (c_cmaterial->rs < .01 || c_isgrey(&c_cmaterial->rs_c)) { |
585 |
< |
if (c_cmaterial->rs > .999) |
462 |
< |
cvtcolor(radrgb, &c_cmaterial->rd_c, 1.); |
463 |
< |
else |
464 |
< |
cvtcolor(radrgb, &c_cmaterial->rd_c, |
584 |
> |
if (c_cmaterial->rs < .1) { |
585 |
> |
cvtcolor(radrgb, &c_cmaterial->rd_c, |
586 |
|
c_cmaterial->rd/(1.-c_cmaterial->rs)); |
587 |
< |
printf("\nvoid plastic %s\n0\n0\n", mname); |
588 |
< |
printf("5 %f %f %f %f %f\n", colval(radrgb,RED), |
587 |
> |
fprintf(matfp, "\nvoid plastic %s\n0\n0\n", mname); |
588 |
> |
fprintf(matfp, "5 %f %f %f %f %f\n", colval(radrgb,RED), |
589 |
|
colval(radrgb,GRN), colval(radrgb,BLU), |
590 |
|
c_cmaterial->rs, c_cmaterial->rs_a); |
591 |
|
return(mname); |
592 |
|
} |
593 |
|
/* else it's metal */ |
594 |
< |
d = c_cmaterial->rd + c_cmaterial->rs; /* average colors */ |
595 |
< |
cvtcolor(radrgb, &c_cmaterial->rd_c, c_cmaterial->rd/d); |
596 |
< |
cvtcolor(c2, &c_cmaterial->rs_c, c_cmaterial->rs/d); |
594 |
> |
/* average colors */ |
595 |
> |
cvtcolor(radrgb, &c_cmaterial->rd_c, c_cmaterial->rd); |
596 |
> |
cvtcolor(c2, &c_cmaterial->rs_c, c_cmaterial->rs); |
597 |
|
addcolor(radrgb, c2); |
598 |
< |
if (c_cmaterial->rs < .999) { |
599 |
< |
d = c_cmaterial->rd/(1. - c_cmaterial->rs); |
479 |
< |
scalecolor(radrgb, d); |
480 |
< |
} |
481 |
< |
printf("\nvoid metal %s\n0\n0\n", mname); |
482 |
< |
printf("5 %f %f %f %f %f\n", colval(radrgb,RED), |
598 |
> |
fprintf(matfp, "\nvoid metal %s\n0\n0\n", mname); |
599 |
> |
fprintf(matfp, "5 %f %f %f %f %f\n", colval(radrgb,RED), |
600 |
|
colval(radrgb,GRN), colval(radrgb,BLU), |
601 |
< |
c_cmaterial->rs, c_cmaterial->rs_a); |
601 |
> |
c_cmaterial->rs/(c_cmaterial->rd + c_cmaterial->rs), |
602 |
> |
c_cmaterial->rs_a); |
603 |
|
return(mname); |
604 |
|
} |
605 |
|
|
606 |
|
|
607 |
< |
cvtcolor(radrgb, ciec, intensity) /* convert a CIE color to Radiance */ |
608 |
< |
COLOR radrgb; |
609 |
< |
register C_COLOR *ciec; |
610 |
< |
double intensity; |
607 |
> |
void |
608 |
> |
cvtcolor( /* convert a CIE XYZ color to RGB */ |
609 |
> |
COLOR radrgb, |
610 |
> |
register C_COLOR *ciec, |
611 |
> |
double intensity |
612 |
> |
) |
613 |
|
{ |
614 |
|
static COLOR ciexyz; |
615 |
|
|
622 |
|
|
623 |
|
|
624 |
|
char * |
625 |
< |
object() /* return current object name */ |
625 |
> |
object(void) /* return current object name */ |
626 |
|
{ |
627 |
|
static char objbuf[64]; |
628 |
|
register int i; |
629 |
|
register char *cp; |
630 |
|
int len; |
631 |
< |
|
631 |
> |
/* tracked by obj_handler */ |
632 |
|
i = obj_nnames - sizeof(objbuf)/16; |
633 |
|
if (i < 0) |
634 |
|
i = 0; |
644 |
|
|
645 |
|
|
646 |
|
char * |
647 |
< |
addarg(op, arg) /* add argument and advance pointer */ |
648 |
< |
register char *op, *arg; |
647 |
> |
addarg( /* add argument and advance pointer */ |
648 |
> |
register char *op, |
649 |
> |
register char *arg |
650 |
> |
) |
651 |
|
{ |
652 |
|
*op = ' '; |
653 |
< |
while (*++op = *arg++) |
653 |
> |
while ( (*++op = *arg++) ) |
654 |
|
; |
655 |
|
return(op); |
656 |
|
} |